I need to add one comment to this.
I'm one of the publisher of such hubs in Hubpages, before do that I got the confirmation from HubPage team. As per them it is not violating their rules & regulations. Only thing they need is categorized those hubs as,
Entertainment --> Videos & Pictures --> Sexy Pics & Videos.
As "relache" mentioned, we cannot publish content has copyright whether it is a pic, video or any content. Also it is not possible to publish XX or XXX content here...this is the confirmation that I got from HubPage team.